ASI is registered for the Technical Standards and Safety Authority (TSSA) Certificate of Approval for the shop fabrication, field installation, erection, repairs and alterations of power piping and pressure piping in accordance with CSA Standard B51 Boiler, Pressure Vessel and Pressure Piping Code, ASME B31.1 Power Piping Code, ASME B31.3 Process Piping Code, The National Board Inspection Code, and the Original Codes of Construction.